import VTY code from zebra/quagga (from my cardshell project)
diff --git a/include/vty/command.h b/include/vty/command.h
new file mode 100644
index 0000000..702e8ed
--- /dev/null
+++ b/include/vty/command.h
@@ -0,0 +1,351 @@
+/*
+ * Zebra configuration command interface routine
+ * Copyright (C) 1997, 98 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2, or (at your
+ * option) any later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING. If not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef _ZEBRA_COMMAND_H
+#define _ZEBRA_COMMAND_H
+
+#include <stdio.h>
+#include "vector.h"
+#include "vty.h"
+
+/* Host configuration variable */
+struct host {
+ /* Host name of this router. */
+ char *name;
+
+ /* Password for vty interface. */
+ char *password;
+ char *password_encrypt;
+
+ /* Enable password */
+ char *enable;
+ char *enable_encrypt;
+
+ /* System wide terminal lines. */
+ int lines;
+
+ /* Log filename. */
+ char *logfile;
+
+ /* config file name of this host */
+ char *config;
+
+ /* Flags for services */
+ int advanced;
+ int encrypt;
+
+ /* Banner configuration. */
+ const char *motd;
+ char *motdfile;
+};
+
+/* There are some command levels which called from command node. */
+enum node_type {
+ SEND_NODE,
+
+ AUTH_NODE, /* Authentication mode of vty interface. */
+ VIEW_NODE, /* View node. Default mode of vty interface. */
+ AUTH_ENABLE_NODE, /* Authentication mode for change enable. */
+ ENABLE_NODE, /* Enable node. */
+ CONFIG_NODE, /* Config node. Default mode of config file. */
+ SERVICE_NODE, /* Service node. */
+ DEBUG_NODE, /* Debug node. */
+ AAA_NODE, /* AAA node. */
+ KEYCHAIN_NODE, /* Key-chain node. */
+ KEYCHAIN_KEY_NODE, /* Key-chain key node. */
+ INTERFACE_NODE, /* Interface mode node. */
+ ZEBRA_NODE, /* zebra connection node. */
+ TABLE_NODE, /* rtm_table selection node. */
+ RIP_NODE, /* RIP protocol mode node. */
+ RIPNG_NODE, /* RIPng protocol mode node. */
+ BGP_NODE, /* BGP protocol mode which includes BGP4+ */
+ BGP_VPNV4_NODE, /* BGP MPLS-VPN PE exchange. */
+ BGP_IPV4_NODE, /* BGP IPv4 unicast address family. */
+ BGP_IPV4M_NODE, /* BGP IPv4 multicast address family. */
+ BGP_IPV6_NODE, /* BGP IPv6 address family */
+ OSPF_NODE, /* OSPF protocol mode */
+ OSPF6_NODE, /* OSPF protocol for IPv6 mode */
+ ISIS_NODE, /* ISIS protocol mode */
+ MASC_NODE, /* MASC for multicast. */
+ IRDP_NODE, /* ICMP Router Discovery Protocol mode. */
+ IP_NODE, /* Static ip route node. */
+ ACCESS_NODE, /* Access list node. */
+ PREFIX_NODE, /* Prefix list node. */
+ ACCESS_IPV6_NODE, /* Access list node. */
+ PREFIX_IPV6_NODE, /* Prefix list node. */
+ AS_LIST_NODE, /* AS list node. */
+ COMMUNITY_LIST_NODE, /* Community list node. */
+ RMAP_NODE, /* Route map node. */
+ SMUX_NODE, /* SNMP configuration node. */
+ DUMP_NODE, /* Packet dump node. */
+ FORWARDING_NODE, /* IP forwarding node. */
+ VTY_NODE /* Vty node. */
+};
+
+/* Node which has some commands and prompt string and configuration
+ function pointer . */
+struct cmd_node {
+ /* Node index. */
+ enum node_type node;
+
+ /* Prompt character at vty interface. */
+ const char *prompt;
+
+ /* Is this node's configuration goes to vtysh ? */
+ int vtysh;
+
+ /* Node's configuration write function */
+ int (*func) (struct vty *);
+
+ /* Vector of this node's command list. */
+ vector cmd_vector;
+};
+
+enum {
+ CMD_ATTR_DEPRECATED = 1,
+ CMD_ATTR_HIDDEN,
+};
+
+/* Structure of command element. */
+struct cmd_element {
+ const char *string; /* Command specification by string. */
+ int (*func) (struct cmd_element *, struct vty *, int, const char *[]);
+ const char *doc; /* Documentation of this command. */
+ int daemon; /* Daemon to which this command belong. */
+ vector strvec; /* Pointing out each description vector. */
+ unsigned int cmdsize; /* Command index count. */
+ char *config; /* Configuration string */
+ vector subconfig; /* Sub configuration string */
+ u_char attr; /* Command attributes */
+};
+
+/* Command description structure. */
+struct desc {
+ const char *cmd; /* Command string. */
+ const char *str; /* Command's description. */
+};
+
+/* Return value of the commands. */
+#define CMD_SUCCESS 0
+#define CMD_WARNING 1
+#define CMD_ERR_NO_MATCH 2
+#define CMD_ERR_AMBIGUOUS 3
+#define CMD_ERR_INCOMPLETE 4
+#define CMD_ERR_EXEED_ARGC_MAX 5
+#define CMD_ERR_NOTHING_TODO 6
+#define CMD_COMPLETE_FULL_MATCH 7
+#define CMD_COMPLETE_MATCH 8
+#define CMD_COMPLETE_LIST_MATCH 9
+#define CMD_SUCCESS_DAEMON 10
+
+/* Argc max counts. */
+#define CMD_ARGC_MAX 25
+
+/* Turn off these macros when uisng cpp with extract.pl */
+#ifndef VTYSH_EXTRACT_PL
+
+/* helper defines for end-user DEFUN* macros */
+#define DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attrs, dnum) \
+ struct cmd_element cmdname = \
+ { \
+ .string = cmdstr, \
+ .func = funcname, \
+ .doc = helpstr, \
+ .attr = attrs, \
+ .daemon = dnum, \
+ };
+
+#define DEFUN_CMD_FUNC_DECL(funcname) \
+ static int funcname (struct cmd_element *, struct vty *, int, const char *[]); \
+
+#define DEFUN_CMD_FUNC_TEXT(funcname) \
+ static int funcname \
+ (struct cmd_element *self, struct vty *vty, int argc, const char *argv[])
+
+/* DEFUN for vty command interafce. Little bit hacky ;-). */
+#define DEFUN(funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_CMD_FUNC_DECL(funcname) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0) \
+ DEFUN_CMD_FUNC_TEXT(funcname)
+
+#define DEFUN_ATTR(funcname, cmdname, cmdstr, helpstr, attr) \
+ DEFUN_CMD_FUNC_DECL(funcname) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0) \
+ DEFUN_CMD_FUNC_TEXT(funcname)
+
+#define DEFUN_HIDDEN(funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_ATTR (funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
+
+#define DEFUN_DEPRECATED(funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_ATTR (funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED) \
+
+/* DEFUN_NOSH for commands that vtysh should ignore */
+#define DEFUN_NOSH(funcname, cmdname, cmdstr, helpstr) \
+ DEFUN(funcname, cmdname, cmdstr, helpstr)
+
+/* DEFSH for vtysh. */
+#define DEFSH(daemon, cmdname, cmdstr, helpstr) \
+ DEFUN_CMD_ELEMENT(NULL, cmdname, cmdstr, helpstr, 0, daemon) \
+
+/* DEFUN + DEFSH */
+#define DEFUNSH(daemon, funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_CMD_FUNC_DECL(funcname) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon) \
+ DEFUN_CMD_FUNC_TEXT(funcname)
+
+/* DEFUN + DEFSH with attributes */
+#define DEFUNSH_ATTR(daemon, funcname, cmdname, cmdstr, helpstr, attr) \
+ DEFUN_CMD_FUNC_DECL(funcname) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, daemon) \
+ DEFUN_CMD_FUNC_TEXT(funcname)
+
+#define DEFUNSH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr) \
+ DEFUNSH_ATTR (daemon, funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN)
+
+#define DEFUNSH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr) \
+ DEFUNSH_ATTR (daemon, funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED)
+
+/* ALIAS macro which define existing command's alias. */
+#define ALIAS(funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, 0)
+
+#define ALIAS_ATTR(funcname, cmdname, cmdstr, helpstr, attr) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, attr, 0)
+
+#define ALIAS_HIDDEN(funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, 0)
+
+#define ALIAS_DEPRECATED(funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED, 0)
+
+#define ALIAS_SH(daemon, funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, 0, daemon)
+
+#define ALIAS_SH_HIDDEN(daemon, funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_HIDDEN, daemon)
+
+#define ALIAS_SH_DEPRECATED(daemon, funcname, cmdname, cmdstr, helpstr) \
+ DEFUN_CMD_ELEMENT(funcname, cmdname, cmdstr, helpstr, CMD_ATTR_DEPRECATED, daemon)
+
+#endif /* VTYSH_EXTRACT_PL */
+
+/* Some macroes */
+#define CMD_OPTION(S) ((S[0]) == '[')
+#define CMD_VARIABLE(S) (((S[0]) >= 'A' && (S[0]) <= 'Z') || ((S[0]) == '<'))
+#define CMD_VARARG(S) ((S[0]) == '.')
+#define CMD_RANGE(S) ((S[0] == '<'))
+
+#define CMD_IPV4(S) ((strcmp ((S), "A.B.C.D") == 0))
+#define CMD_IPV4_PREFIX(S) ((strcmp ((S), "A.B.C.D/M") == 0))
+#define CMD_IPV6(S) ((strcmp ((S), "X:X::X:X") == 0))
+#define CMD_IPV6_PREFIX(S) ((strcmp ((S), "X:X::X:X/M") == 0))
+
+/* Common descriptions. */
+#define SHOW_STR "Show running system information\n"
+#define IP_STR "IP information\n"
+#define IPV6_STR "IPv6 information\n"
+#define NO_STR "Negate a command or set its defaults\n"
+#define CLEAR_STR "Reset functions\n"
+#define RIP_STR "RIP information\n"
+#define BGP_STR "BGP information\n"
+#define OSPF_STR "OSPF information\n"
+#define NEIGHBOR_STR "Specify neighbor router\n"
+#define DEBUG_STR "Debugging functions (see also 'undebug')\n"
+#define UNDEBUG_STR "Disable debugging functions (see also 'debug')\n"
+#define ROUTER_STR "Enable a routing process\n"
+#define AS_STR "AS number\n"
+#define MBGP_STR "MBGP information\n"
+#define MATCH_STR "Match values from routing table\n"
+#define SET_STR "Set values in destination routing protocol\n"
+#define OUT_STR "Filter outgoing routing updates\n"
+#define IN_STR "Filter incoming routing updates\n"
+#define V4NOTATION_STR "specify by IPv4 address notation(e.g. 0.0.0.0)\n"
+#define OSPF6_NUMBER_STR "Specify by number\n"
+#define INTERFACE_STR "Interface infomation\n"
+#define IFNAME_STR "Interface name(e.g. ep0)\n"
+#define IP6_STR "IPv6 Information\n"
+#define OSPF6_STR "Open Shortest Path First (OSPF) for IPv6\n"
+#define OSPF6_ROUTER_STR "Enable a routing process\n"
+#define OSPF6_INSTANCE_STR "<1-65535> Instance ID\n"
+#define SECONDS_STR "<1-65535> Seconds\n"
+#define ROUTE_STR "Routing Table\n"
+#define PREFIX_LIST_STR "Build a prefix list\n"
+#define OSPF6_DUMP_TYPE_LIST \
+"(neighbor|interface|area|lsa|zebra|config|dbex|spf|route|lsdb|redistribute|hook|asbr|prefix|abr)"
+#define ISIS_STR "IS-IS information\n"
+#define AREA_TAG_STR "[area tag]\n"
+
+#define CONF_BACKUP_EXT ".sav"
+
+/* IPv4 only machine should not accept IPv6 address for peer's IP
+ address. So we replace VTY command string like below. */
+#ifdef HAVE_IPV6
+#define NEIGHBOR_CMD "neighbor (A.B.C.D|X:X::X:X) "
+#define NO_NEIGHBOR_CMD "no neighbor (A.B.C.D|X:X::X:X) "
+#define NEIGHBOR_ADDR_STR "Neighbor address\nIPv6 address\n"
+#define NEIGHBOR_CMD2 "neighbor (A.B.C.D|X:X::X:X|WORD) "
+#define NO_NEIGHBOR_CMD2 "no neighbor (A.B.C.D|X:X::X:X|WORD) "
+#define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor IPv6 address\nNeighbor tag\n"
+#else
+#define NEIGHBOR_CMD "neighbor A.B.C.D "
+#define NO_NEIGHBOR_CMD "no neighbor A.B.C.D "
+#define NEIGHBOR_ADDR_STR "Neighbor address\n"
+#define NEIGHBOR_CMD2 "neighbor (A.B.C.D|WORD) "
+#define NO_NEIGHBOR_CMD2 "no neighbor (A.B.C.D|WORD) "
+#define NEIGHBOR_ADDR_STR2 "Neighbor address\nNeighbor tag\n"
+#endif /* HAVE_IPV6 */
+
+/* Prototypes. */
+void install_node(struct cmd_node *, int (*)(struct vty *));
+void install_default(enum node_type);
+void install_element(enum node_type, struct cmd_element *);
+void sort_node();
+
+/* Concatenates argv[shift] through argv[argc-1] into a single NUL-terminated
+ string with a space between each element (allocated using
+ XMALLOC(MTYPE_TMP)). Returns NULL if shift >= argc. */
+char *argv_concat(const char **argv, int argc, int shift);
+
+vector cmd_make_strvec(const char *);
+void cmd_free_strvec(vector);
+vector cmd_describe_command();
+char **cmd_complete_command();
+const char *cmd_prompt(enum node_type);
+int config_from_file(struct vty *, FILE *);
+enum node_type node_parent(enum node_type);
+int cmd_execute_command(vector, struct vty *, struct cmd_element **, int);
+int cmd_execute_command_strict(vector, struct vty *, struct cmd_element **);
+void config_replace_string(struct cmd_element *, char *, ...);
+void cmd_init(int);
+
+/* Export typical functions. */
+extern struct cmd_element config_end_cmd;
+extern struct cmd_element config_exit_cmd;
+extern struct cmd_element config_quit_cmd;
+extern struct cmd_element config_help_cmd;
+extern struct cmd_element config_list_cmd;
+char *host_config_file();
+void host_config_set(char *);
+
+void print_version(const char *);
+
+#endif /* _ZEBRA_COMMAND_H */